<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <!--<div id="app" v-bind:title="title">-->
        <!--{{msg}}-->
    <!--</div>-->
<div id="app">
    <input type="text" v-bind:value="title">
</div>


</body>
    <script>
        var  app = new Vue({
            el:'#app',
            data:{
                msg:'你微笑时很美',
                title:'高学成呀'
            }
        })
    </script>
</html>